Debby is doing a real number on vast swaths of Florida, dumping up to 15 inches of rain, unleashing deadly tornadoes and dousing hopes of launching a mighty triple barreled Delta IV Heavy rocket on Thursday morning, June 28, with a super secret spy satellite for the National Reconnaissance Office (NRO).

Tropical Storm Debby has destroyed homes, killed at least 1 person and will wreak havoc as it tracks across central Florida from the Gulf Coast to the Atlantic Coast over the next two days – just north of Cape Canaveral, Florida and the Delta 4 Heavy launch pad at Space Launch Complex 37.

The last Delta 4 Heavy to blast off from Cape Canaveral Air Force Station on Nov 21, 2010. Credit: Alan Walters – awaltersphoto.com

The odds of launching the United Launch Alliance (ULA) Delta 4 Heavy on June 28 have dropped to just 30 percent favorable. The outlook improves slightly to 40 % favorable on Friday, June 29 according to the official Air Force weather forecast.

The launch window for Thursday’s ULA Delta 4 Heavy launch stretches from 6:16 a.m. to 10:30 a.m. and comes just 8 days after the last spy satellite blasted off on an Atlas V rocket from Cape Canaveral on June 20 – launch story here.